A22

The entrance takes the form of a vast forced conduit choked with scree. One quickly reaches a junction. To the left, a small forced conduit climbs upstream; it leads to a second entrance hidden among the blocks of the depression, before becoming choked 30 metres further on. To the right, a rather arduous 30-metre ramp in a forced conduit brings us to the top of a fairly narrow joint. This joint intersects a more comfortable meander, quickly choked upstream. Note the presence, at the top of the shaft and 10 metres from the bottom, of two meander branches that are just as narrow.

At the base of the shaft, one emerges into an active meander. Downstream, the meander has been followed for 150 metres; it is generally very narrow, with a draught of drawing air, and leads to uninviting low aquatic passages. Upstream, after a small crawl and a fairly severe squeeze, one can explore on the one hand a small active upstream network that quickly becomes choked and on the other hand the upstream part of the meander. Stop at a constriction with a blowing draught.

At the top of the joint, progress along the top, then descend. Towards downstream, the meander leads to a 30-metre shaft broken into pitches.